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Boulder Monthly Means: Maximum Temperature

Units are degrees Fahrenheit

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Monthly Mean Maximum Temperature Graph
Interactively see where monthly values rank

Year	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC
1893	X	X	X	X	X	X	X	X	X	64.3	50.6	49.5
1894	43.9	37.7	54.0	66.0	X	X	81.6	80.6	X	X	X	41.6
1895	39.7	37.8	47.0	66.8	70.6	72.7	X	X	X	X	X	X
1896	X	X	X	X	X	X	X	X	X	X	X	X
1897	X	X	X	X	69.5	74.0	81.0	78.3	75.6	61.6	51.1	39.9
1898	39.9	48.2	45.6	59.8	60.8	77.1	82.2	84.2	73.7	60.4	47.3	39.2
1899	41.4	28.4	45.9	62.5	70.6	78.9	81.0	83.0	78.3	61.4	58.6	47.1
1900	49.0	43.8	56.1	56.3	71.5	81.9	82.5	84.7	73.1	69.4	58.0	50.5
1901	49.1	40.8	51.7	58.6	70.8	78.2	87.8	83.3	75.4	67.4	61.0	46.8
1902	43.1	49.9	49.8	61.1	70.6	79.9	81.5	84.2	74.8	65.7	53.8	48.0
1903	49.5	33.1	47.9	60.0	66.0	71.4	82.7	82.6	73.5	63.4	56.1	51.9
1904	43.7	54.1	57.3	61.4	66.8	72.0	79.7	83.0	76.5	67.2	61.0	48.1
1905	39.2	37.8	54.7	56.4	63.3	77.2	79.2	84.9	79.1	60.2	54.4	46.9
1906	50.4	50.1	39.1	62.1	69.4	75.0	77.3	80.5	73.4	64.6	48.8	51.9
1907	46.1	54.8	60.6	58.9	60.6	75.3	82.5	82.1	75.6	66.1	52.4	47.2
1908	48.2	50.3	57.5	65.8	66.9	76.5	81.0	78.7	78.8	59.6	49.4	45.1
1909	49.2	44.4	42.0	51.3	66.6	77.1	83.4	84.2	74.2	63.2	52.9	29.8
1910	42.2	42.7	64.7	66.5	67.1	80.1	X	X	77.9	70.4	59.0	47.5
1911	52.0	42.8	59.5	62.7	71.6	82.6	80.7	84.1	78.9	60.7	51.7	X
1912	X	X	43.8	55.9	68.5	74.4	80.6	82.5	68.2	62.9	56.9	44.3
1913	44.2	35.9	49.1	62.4	69.3	78.8	82.3	83.9	72.8	61.2	58.3	39.3
1914	50.9	45.6	56.1	61.7	69.2	82.2	83.6	82.8	81.1	67.5	62.1	35.9
1915	43.0	48.0	42.8	63.1	67.0	75.9	81.4	76.8	74.8	69.4	56.2	47.6
1916	39.0	50.8	62.3	62.5	72.5	81.4	87.0	78.6	76.1	62.4	47.8	36.1
1917	40.1	44.4	43.4	57.0	60.6	82.5	90.4	83.6	77.7	66.1	60.0	51.9
1918	35.9	51.1	61.1	55.5	74.1	83.7	86.6	86.5	72.9	66.3	49.6	43.2
1919	47.6	45.0	52.5	62.8	71.9	83.7	87.8	86.7	78.7	63.7	50.5	51.5
1920	51.2	46.7	52.6	51.3	68.8	77.1	85.5	81.6	76.5	66.5	48.9	45.2
1921	46.0	50.1	59.6	58.8	70.1	78.8	86.4	84.1	80.6	72.6	59.2	49.5
1922	40.0	43.5	54.8	58.4	70.9	85.2	83.5	86.8	81.5	67.1	49.3	49.5
1923	49.4	41.6	45.8	59.7	67.6	76.3	82.8	79.4	72.7	53.2	53.7	44.9
1924	41.3	52.2	38.5	61.0	66.2	83.2	84.2	86.1	69.8	66.7	58.7	38.1
1925	43.9	55.3	59.8	64.9	70.8	79.3	86.1	80.5	76.9	51.0	51.2	42.5
1926	40.8	49.9	47.4	56.5	68.8	77.4	83.4	85.2	74.9	72.2	56.0	44.7
1927	51.0	51.9	51.3	63.6	75.4	77.5	84.7	79.1	76.2	70.5	59.5	40.8
1928	49.5	45.7	52.6	60.8	69.9	74.4	84.1	84.2	80.4	65.7	53.5	44.2
1929	39.3	36.5	51.7	59.7	69.5	83.3	88.4	86.4	72.5	66.7	46.0	51.6
1930	29.4	54.7	50.8	69.7	68.4	84.6	87.2	82.4	78.4	63.8	55.0	45.5
1931	48.1	50.9	50.0	61.3	69.3	85.3	90.7	86.2	82.7	68.1	51.8	46.9
1932	44.6	53.2	46.0	66.2	73.7	79.4	88.0	86.5	79.7	65.2	57.7	35.4
1933	47.8	42.6	56.6	60.2	67.3	86.1	89.5	82.2	80.6	73.4	61.2	56.9
1934	52.2	49.5	60.5	65.3	78.5	85.4	90.8	87.2	77.9	73.9	57.0	49.4
1935	53.2	53.0	57.3	59.1	59.9	79.5	87.7	85.0	77.7	66.0	48.8	47.2
1936	44.5	42.6	56.0	63.5	73.6	82.1	88.3	85.0	77.9	61.2	55.5	47.0
1937	29.3	45.8	49.0	61.6	71.2	76.3	85.4	88.1	79.0	66.0	52.4	44.2
1938	45.7	47.0	52.7	61.6	64.1	78.7	85.1	85.9	76.6	66.5	46.8	43.3
1939	45.3	36.5	52.9	61.0	73.8	80.7	87.9	81.5	76.3	63.6	52.2	50.0
1940	34.1	44.6	54.3	57.6	70.1	82.4	84.2	81.7	72.3	65.0	44.7	41.5
1941	43.1	45.0	44.0	51.2	68.4	73.5	81.8	78.7	69.4	58.4	54.6	45.5
1942	41.2	34.7	47.9	62.7	68.6	76.4	85.7	82.4	72.8	60.0	54.8	48.1
1943	46.0	52.8	49.1	67.2	64.1	77.8	87.6	86.1	75.8	66.5	55.1	44.2
1944	42.5	42.8	44.5	52.8	68.5	76.5	82.1	83.7	74.6	65.5	52.2	44.5
1945	44.1	43.2	53.2	52.5	68.7	72.3	83.9	82.9	71.9	68.0	54.4	42.5
1946	44.5	49.6	58.2	68.2	61.6	81.4	85.2	81.4	74.7	59.7	47.7	49.6
1947	43.5	43.2	47.8	57.2	65.6	74.3	X	89.0	83.8	70.3	46.6	48.1
1948	42.1	42.0	47.4	66.8	73.1	81.4	89.8	88.8	83.3	69.2	51.5	44.5
1949	34.1	46.8	54.9	66.5	73.1	80.6	88.5	88.1	80.8	65.7	66.8	50.1
1950	46.1	54.5	54.1	64.2	68.5	84.1	84.7	85.5	74.3	77.4	56.1	52.4
1951	42.5	49.3	50.4	59.4	72.6	75.5	89.2	85.2	78.0	64.7	53.7	42.7
1952	47.9	50.2	47.8	63.5	71.3	89.6	89.7	87.1	83.1	72.1	48.8	47.5
1953	55.2	48.3	59.7	57.4	67.8	85.8	89.2	87.4	84.9	70.7	57.9	47.1
1954	53.4	61.2	49.2	71.2	72.0	87.2	92.8	88.5	81.1	68.8	59.6	52.8
1955	42.4	42.3	51.5	67.2	73.9	78.7	91.2	87.5	80.3	71.7	51.8	49.5
1956	48.3	41.9	56.1	62.2	75.5	89.9	87.5	85.0	84.5	72.9	54.1	51.5
1957	39.0	54.9	53.7	55.5	66.3	81.6	88.6	88.0	78.3	65.0	50.6	56.0
1958	48.7	51.8	43.3	57.3	76.9	84.4	85.3	88.3	80.6	70.8	56.8	48.9
1959	45.2	42.3	53.3	60.0	69.5	85.3	86.9	87.0	74.8	63.7	55.8	51.5
1960	43.0	38.4	52.4	65.8	72.8	85.3	87.7	88.4	80.6	67.6	57.6	47.4
1961	50.0	52.1	51.0	61.8	71.6	80.6	86.3	85.5	70.6	66.2	49.7	41.5
1962	39.1	46.2	49.6	66.6	74.4	79.9	86.3	88.2	77.8	71.4	59.0	50.9
1963	36.9	52.9	53.8	65.5	77.0	83.6	91.0	82.6	81.5	72.7	58.1	46.5
1964	47.5	43.7	49.2	62.6	73.9	79.2	91.3	85.3	79.2	70.4	53.6	48.2
1965	49.9	45.9	43.4	64.7	72.1	78.2	86.2	83.7	68.8	72.5	58.6	50.6
1966	44.8	43.8	60.6	62.6	77.9	81.4	91.2	85.2	78.2	69.0	56.4	46.3
1967	49.4	51.5	60.8	65.9	67.7	73.9	85.4	83.6	77.9	70.3	54.6	39.9
1968	46.7	48.2	57.7	58.9	69.0	84.9	86.0	83.4	78.6	70.1	49.8	44.9
1969	49.4	48.9	47.5	67.6	74.3	73.7	89.1	88.7	80.4	52.9	54.4	47.6
1970	45.7	55.3	48.5	58.3	74.6	78.7	86.0	86.5	73.9	58.9	52.0	46.6
1971	45.9	44.6	53.5	61.1	67.1	84.1	86.1	86.3	73.1	63.7	53.7	44.8
1972	46.3	52.8	61.0	62.7	70.2	82.4	85.2	83.1	76.0	65.2	45.0	40.5
1973	41.2	47.0	50.4	55.9	69.3	82.8	84.3	88.1	73.3	69.9	51.3	46.9
1974	41.8	51.0	59.5	61.2	77.0	83.5	88.4	83.4	75.2	67.3	51.9	43.8
1975	45.5	46.1	51.9	58.1	67.8	78.7	87.1	86.3	75.0	70.6	51.5	49.8
1976	46.1	53.7	52.1	62.1	69.7	82.1	88.5	84.4	74.0	64.3	52.0	50.1
1977	42.3	51.4	53.7	63.1	74.5	86.7	88.2	82.1	81.5	69.1	53.7	49.8
1978	38.6	39.9	56.6	62.8	70.6	81.4	89.4	85.4	81.1	69.5	52.4	40.7
1979	35.7	50.5	54.3	63.9	X	X	87.7	81.1	81.0	70.9	46.9	52.3
1980	40.8	49.2	51.5	61.5	68.8	89.5	90.9	87.1	81.4	67.1	56.5	57.2
1981	52.2	53.8	55.1	71.2	67.0	84.9	87.6	82.5	79.0	62.7	57.3	48.2
1982	47.3	49.6	57.6	65.6	69.3	76.2	86.2	86.3	73.2	63.8	X	47.0
1983	X	X	49.9	55.7	66.2	77.2	87.3	90.2	82.7	70.3	54.1	31.7
1984	43.5	48.9	53.3	56.9	76.2	80.3	89.1	85.6	76.0	58.0	54.9	48.1
1985	39.0	43.4	55.6	65.5	74.6	83.8	85.9	89.0	73.5	66.8	41.5	43.9
1986	57.1	49.5	62.2	64.1	71.2	83.7	86.3	84.9	72.6	63.6	53.3	45.0
1987	45.6	48.1	52.6	68.0	71.7	83.7	88.6	82.9	77.1	67.9	53.0	41.7
1988	40.9	49.5	54.2	66.5	73.5	85.7	88.4	86.9	77.3	69.8	54.2	45.4
1989	49.5	35.3	60.1	65.0	74.0	78.6	89.5	X	X	X	X	X
1990	X	X	X	60.6	68.9	86.4	81.6	82.8	77.9	68.7	57.8	40.4
1991	42.3	53.2	55.1	59.9	71.6	79.9	84.0	82.4	75.7	66.5	47.2	46.9
1992	48.2	52.2	54.8	68.1	73.0	76.4	83.0	80.0	79.4	68.4	45.3	41.2
1993	39.0	40.9	53.9	60.2	70.5	79.3	84.3	X	73.4	61.6	48.1	47.0
1994	47.3	45.2	57.5	61.5	77.0	86.8	86.3	85.0	79.7	63.0	47.6	48.4
1995	46.9	51.7	55.2	57.2	62.4	76.1	86.0	89.8	73.7	66.6	57.8	48.3
1996	42.8	51.0	51.0	64.1	73.4	82.0	85.4	85.2	75.4	66.7	53.7	49.1
1997	43.6	43.3	60.7	55.5	71.5	80.3	86.0	81.5	76.8	66.5	49.6	44.3
1998	48.6	48.0	52.1	59.1	74.2	77.6	86.6	84.9	82.3	62.8	55.2	44.1
1999	48.9	55.4	60.3	56.8	69.9	80.1	88.0	82.8	73.1	67.8	63.4	49.0
2000	47.9	54.1	56.0	67.6	76.6	82.8	89.8	88.2	79.0	62.9	43.4	43.5
2001	44.2	43.7	52.5	63.9	72.2	85.1	89.9	86.1	80.5	68.9	57.2	47.1
2002	45.1	50.6	52.7	68.4	71.2	87.1	93.4	87.8	77.6	58.2	52.6	48.3
2003	53.9	43.1	56.4	64.0	71.6	76.2	92.4	87.3	75.6	73.5	49.8	48.3
2004	47.3	45.7	62.8	61.4	74.2	76.2	83.5	81.0	77.9	65.0	50.6	48.3
2005	47.2	49.7	53.9	61.7	70.6	79.9	91.5	84.2	81.6	66.3	58.4	45.6
2006	53.3	46.4	52.3	69.7	76.0	88.8	88.8	85.3	72.9	63.5	56.4	46.3
2007	39.6	47.4	61.0	60.6	72.6	84.6	90.3	88.8	79.6	69.7	58.7	42.0
2008	43.4	49.5	54.0	63.0	71.6	82.0	92.0	84.4	76.2	66.0	59.5	45.0

1893-1992

type	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC
mean	44.6	46.9	52.5	61.7	70.1	80.3	86.0	84.4	77.0	66.2	53.7	46.1
std	5.2	5.9	5.5	4.3	3.9	4.2	3.2	2.8	3.6	4.6	4.4	4.9

1961-1990

Type	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC
mean	44.9	48.3	54.0	62.9	71.7	81.6	87.5	85.2	76.8	67.0	53.1	45.9
med	45.6	48.9	53.8	62.7	71.7	81.8	87.1	85.2	77.6	67.8	53.3	46.8
std	4.9	4.5	4.6	3.7	3.4	3.8	2.2	2.3	3.6	4.6	4.0	4.8

Data was obtained from GCPS (1893-1990) and the local station report(1991-present)

Pages are for curiosity only; there are no guarantees that the data is correct.

Physical Sciences Division

Boulder Monthly Means: Maximum Temperature

Units are degrees Fahrenheit